Our original intent for this new Pro Tools release was to make additional voices available for HDX. Unfortunately our testing unveiled technical issues occurring in about 15% of cases and as we make quality and stability our top priorities, we couldn’t include the functionality in this release. We decided to release the additional voices for Pro Tools | Ultimate for HD Native and Pro Tools | Ultimate standalone, as it was a highly requested feature by our users to be able to open HDX sessions with large voice count on native systems. We will continue to work on the issue and hopefully provide additional voices on HDX in the near future.